William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 6626096 | Redemption ticket maker A ticket making apparatus includes a feed mechanism and a perforating assembly set within a housing that has an opening through which tickets are dispensed. The perforating assembly perforates a flexible material to define individual tickets. The apparatu... | 09/30/2003 |